Page 1 of 2 12 LastLast
Results 1 to 13 of 24
  1. #1
    Join Date
    May 2005
    Location
    Indianapolis, IN
    Posts
    255

    22 in a 410 unit

    Had a tech top off a 410 unit with a pound or two of 22. Is it ok to just recover, flush lines, vacuum and recharge? Surely we don't need to replace equipment, right?

  2. #2
    Join Date
    Jan 2010
    Posts
    6,841
    Refrigerant for stationary equipment does not come with oil in it. That being said there would be no oil cross contamination. Always replace the filter when you open a system.

  3. #3
    Join Date
    May 2005
    Location
    Indianapolis, IN
    Posts
    255
    Good point about the refrigerant having no oil in it.

    Sounds like we will go with plan A then.

  4. #4
    Join Date
    Apr 2008
    Location
    maryland
    Posts
    196
    Happens to the best if us. Mine was a overtime call at 1am

    Sent from my SCH-I535 using Tapatalk 2

  5. #5
    Join Date
    Jan 2009
    Location
    IRELAND
    Posts
    47
    Id just change the gas . r22 has no problem mixing and running with poe oil ,Its the 410 that wont mix with the 22s mineral oil

  6. #6
    Join Date
    Feb 2012
    Location
    Pacific Northwest
    Posts
    96
    You're right that a R22 system has no problem with POE oil. But this was a 410 system adding R22 to it.

  7. #7
    Join Date
    Apr 2013
    Location
    Independence, MO
    Posts
    169
    You are sure right when you say it happens to the best of us! A 1 hr call turn into 6.

  8. #8
    Join Date
    Feb 2012
    Location
    Pacific Northwest
    Posts
    96
    Quote Originally Posted by JKerch View Post
    You are sure right when you say it happens to the best of us! A 1 hr call turn into 6.
    You're absolutely right about that one! I have tried to explain that to our relatively new service dispatcher. She has no comprehension of exactly what the difference between a maintenance call and a repair is.
    For example, last week I had to do a leak search, which I told her might take a few hours, and here she goes and schedules three more call in between. Maintenance calls no less!

  9. #9
    Join Date
    Jan 2009
    Location
    IRELAND
    Posts
    47
    Quote Originally Posted by HotWaterHeat View Post
    You're right that a R22 system has no problem with POE oil. But this was a 410 system adding R22 to it.
    ya i know its a 410 was just saying no real need to flush as there be no sludge or anything formed as the 22 would mix ok

  10. #10
    Join Date
    Sep 2008
    Location
    Western PA
    Posts
    25,961
    Can anyone provide documentation as to this "sludge" that you're alleging that forms when PolyolEster oil and Mineral oil mix?

    Yes, I know that it is "common knowledge" that it happens, but I've got a problem with it.

    See, I've SEEN POE and mineral oil mixed with no problems. I've done it on instructions from customers and engineers intentionally.

    So, can anyone document it? Or are we just repeating the same old tales without spending any time to verify the truth of it?


    As to the original problem, pull the mixed gas and charge it up with new. Good to go.

    Refrigerant doesn't affect the oil. Doesn't matter if you put 22 in a 410a system or the other way 'round.

  11. #11
    Join Date
    Jan 2009
    Location
    IRELAND
    Posts
    47
    Quote Originally Posted by jpsmith1cm View Post
    Can anyone provide documentation as to this "sludge" that you're alleging that forms when PolyolEster oil and Mineral oil mix?

    Yes, I know that it is "common knowledge" that it happens, but I've got a problem with it.

    See, I've SEEN POE and mineral oil mixed with no problems. I've done it on instructions from customers and engineers intentionally.

    So, can anyone document it? Or are we just repeating the same old tales without spending any time to verify the truth of it?


    As to the original problem, pull the mixed gas and charge it up with new. Good to go.

    Refrigerant doesn't affect the oil. Doesn't matter if you put 22 in a 410a system or the other way 'round.
    Good point could be an old wives tale but id prefer to be careful than to be caught.

  12. #12
    Join Date
    Aug 2004
    Location
    North Richland Hills, Texas
    Posts
    14,915
    Quote Originally Posted by jpsmith1cm View Post
    Can anyone provide documentation as to this "sludge" that you're alleging that forms when PolyolEster oil and Mineral oil mix?

    Yes, I know that it is "common knowledge" that it happens, but I've got a problem with it.
    More like "common misinformation" from people who heard it from someone who heard it from someone who misunderstood something in a training class he was sleeping through.

    Mineral and POE oil are completely compatible with each other.
    If more government is the answer, then it's a really stupid question.

  13. #13
    Join Date
    Jun 2001
    Location
    Moore, Oklahoma, United States
    Posts
    4,508
    Quote Originally Posted by mark beiser View Post
    More like "common misinformation" from people who heard it from someone who heard it from someone who misunderstood something in a training class he was sleeping through.

    Mineral and POE oil are completely compatible with each other.
    So as long as there is no burnout you can use R22 lineset without flushing when converting the system to R410a? No need to worry about "R22 oil" in the old lineset?

Page 1 of 2 12 LastLast

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Comfortech Show Promo Image

Related Forums

Plumbing Talks | Contractor Magazine
Forums | Electrical Construction & Maintenance (EC&M) Magazine
Comfortech365 Virtual Event